DTC B1659
DTC B1659 : Front Interior LF Antenna circuit short
| DTC Description | DTC |
|---|---|
| B1659 Front Interior LF Antenna circuit short |
DTC (Keyless Access Control Unit)
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .
- Problem verification
-1. Clear the DTCs with the HDS.
-2. Select the KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter the SELF CHECK.
One-Push - KEYLESS ACCESS CONTROL UNIT - SELF CHECK
Do the SELF CHECK.
-4. Check for DTCs with the HDS.
DTC Description DTC B1659 Front Interior LF Antenna circuit short Is DTC B1659 indicated?
YES
Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for loose or poor connections.
- Shorted wire check (FR INT LF+, FR INT LF- lines)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connectors.
Keyless access/TPMS control unit connector A (32P) Front interior LF antenna 2P connector -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Keyless access/TPMS control unit connector A (32P): disconnected Front interior LF antenna 2P connector: disconnected Test point 1 Keyless access/TPMS control unit connector A (32P) No. 14 - Refer to: Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2022 2023) or Keyless Access/TPMS Control Unit Connector for Inputs and Outputs Test point 2 Body ground Test point 1 Keyless access/TPMS control unit connector A (32P) No. 30 - Refer to: Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2022 2023) or Keyless Access/TPMS Control Unit Connector for Inputs and Outputs Test point 2 Body ground Is there continuity?
YES
Repair a short to ground in the wire.
NO
The FR INT LF+ and FR INT LF- wires are not shorted. Go to step 3.
- Shorted wire check (FR INT LF+ line to FR INT LF- line)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Keyless access/TPMS control unit connector A (32P): disconnected Front interior LF antenna 2P connector: disconnected Test point 1 Keyless access/TPMS control unit connector A (32P) No. 14 - Refer to: Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2022 2023) or Keyless Access/TPMS Control Unit Connector for Inputs and Outputs Test point 2 Keyless access/TPMS control unit connector A (32P) No. 30 - Refer to: Keyless Access/TPMS Control Unit Connector for Inputs and Outputs (2022 2023) or Keyless Access/TPMS Control Unit Connector for Inputs and Outputs Is there continuity?
YES
Repair a short in FR INT LF+ wire to FR INT LF- wire.
NO
The FR INT LF+ and FR INT LF- wires are OK. Go to step 4.
- Keyless access/TPMS control unit FR INT LF+, FR INT LF- line output check
-1. Reconnect the following connector.
Keyless access/TPMS control unit connector A (32P) -2. Turn the vehicle to the ON mode.
-3. Select KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter FUNCTIONAL TESTS.
One-Push - KEYLESS ACCESS CONTROL UNIT - FUNCTIONAL TESTS
Connect the voltmeter to test points 1 and 2.
Test condition Vehicle ON mode Front interior LF antenna 2P connector: disconnected Test point 1 Front interior LF antenna 2P connector No. 2 Test point 2 Front interior LF antenna 2P connector No. 1 -5. Select CABIN FRONT ANTENNA L DC OUTPUT with the HDS.
Is there voltage?
YES
Faulty front interior LF antenna; replace the front interior LF antenna - Refer to: Keyless Access LF Antenna/Initiator (Left-Front) Removal and Installation or Keyless Access LF Antenna (Front Interior) Removal and Installation .
NO